Shoe-nailing machine.



J. BRAGG SHOE NAILING MACHINE.

APPLICATION FILED OCT. 9, H116 Patented Jan. 1,1918,

4 SHEETS-SHEET JZmzas J. BRAGG.

SHO'E NMLING MACHINE.

APPLICATION FILED OCT. 9, I916.

. Patented Jan. 1-, 1918.

4 SHEETS-SHEET?- JQ/iZS rag J. BR'AGG.

SHOE NAILING MACHINE. APPLICATION FILED on. 9, 1916.

1,252,378. Patented Jan. 1, 1918.

M II] W nu Ja/mfafiragg v bfilof my invention-by the means and in the in feeding the nails separately UNITED STATES PATENT OFFICE.

JAMES BRAGG, OF ST. JOSEPH, MISSOURI, ASSIGNOR TO SPECIALTY SHOE MACHINERY COMPANY, OF ST. JOSEPH, MISSOURI, A. COBPORATION OF MISSOURI.

SHOE-NAILING MACHINE.

Specification of Letters Patent.

Patented Jan. 1, 1918.

Application filed October 9, 1916. Serial No. 124,554.

To all whom it may concern:

Be it known that 1, JAMES Bnaoo, a citizen of the United States, and a resident of St. Joseph, county of Buchanan, and'State of Missouri, have invented certain new and useful Improvements in Shoe-Nailing Machines, of which the following is a specification.

My invention relates to machines for automatically driving nails into the soles and heels of leather shoes.

One of the objects of my invention is the provision of a chute for the nails that is adapted to convey them from the usual hopper and feed them to the throat where they are operated upon by the driving element, said chute being removable so that it may be conveniently detached to remove the nails in the event they become clogged. Another object of my invention is the provision in a shoe nailing machine of an effective means for accurately guiding and controlling the drive arm of a machine where a long drive is essential. Still another object of my invention is the provision in a shoe nailing machine of a driving rod of relatively small diameter in position by a suitable removable head whereby it may be readily attached to or detached from the driving arm. A further object of my invention is to provide a nail ing machine with a nail throat that is continuous and of the same diameter, from the feeding mechanism to the driving chamber, thereby preventing clogging of the chamber and jamming the driving rod. And a still further object of my invention is the provision of a nail switch (or what is commonly known as a hopper block) that is effective from the hopper to the nail chute, and which may be automatically locked and prevented from feeding nails in the event the shoe, sole or heel has not been moved or fed to the proper position to receive a nail. Other objects of my invention are to provide a hopper block and associated mechanism that is comparatively inexpensive to manufacture so that it will not add materially to the cost of the shcenailing machine; to provide a simply constructed mechanism forafeeding nails; and to provide a device that is easy to ma nipulate.

I prefer to accomplish the divers objects that is securely held manner hereinafter fully described and as more particularly pointed out in the claims, reference being had to the accompanying drawings forming a part of this specification, wherein,--

Figure'l is a vertical side elevation of the nailing head of my improved shoe-nailing machine, looking at the side upon which the driving arm is disposed.

Fig. 2 is a fragmentary view of the upper portion of the machine shown in Fig 1, looking at the same from the opposite side.

Fig. 3. is a fragmentary plan of the top of the machine, certain portions being broken away for clearness.

Fig. 4: is a vertical sectional view through 318513 11 chute and the nailthroht or driving Fig. 5 is a vertical, section of outer end of the drive-arm, taken at a rightangle to Fig. 4. I

Fig. 6 is a detail view ofthe nail-switch" actuating device detached from themachine.

Fig. 7 is a detail elevation ofthehopperblock and nail-switch, lookingat the same from the drive-arm side of the machine and the adjoining elements removed for. the purpose of clearness.

Fig. 8 is a plan of the top block and nail switch shown in Fi 7.

Fig. 9 is a longitudinal horizonta l section taken on line 9-9, Fig. 7, looking in the direction of the arrows.

Fig. 10 in an enlarged longitudinal horizontal section taken on line 1()'-10, Fig. 8, locking inthe direction ofthe arrows;

Fig. 11 is an enlarged longitudinal 'hori- Zontal section taken on line l'1'1 1, F.ig 8, looking in the direction of the arrows."

Fig. 12 is a perspective'view of. the nail switching member detached.

Fig. 13' is a perspective view of the lock-, ing device detached from the hopper-hlockt Referring to the drawings, it will be ,ob-' served that a suitable raceway or slotted guide 10 is inclinedfrom the nail hoppers at the'top. of the standard of the machine to the hopper block thatfis adapted to receive the nails therefrom and feed them to the driving; mechanismf Secured to or adjacent the wall of the raceway is a suitable block 11 that isof the hopperprovided with a vertically disposed bearing boss 12 that is.Jboredwertically -and is dis 1;

provided with and is preferably:

the nail eing' of the depending otat di' a l i l 1 ngtch posed opposite the lower end of the raceway 10. This boss 12 provides a bearing for a suitable stem or spindle 13 having its oppd' site ends extended through said boss and the upper extended end provided with a circular disk 14, the marginal periphery of which projects beyond the boss, as shown, and is rovided with a -,depen'd=ing apron 15. This apron 15 is curved concentrically with the axis of the spindle 13 and adapted tomove' across the adjacent end of theraceway or g'ii'ide'10 and the bfo's's' is" pto'vide'dwith a cbr"e;sponding" enlargement 16 to permit of a Sunshiny snag fit asaip venfi the nails from entering the space between elements. This disk and the aproh" constitute a nail-selecting or feeding device that is adapted to shunt o1" carr the nails from the raceway to a position where they will fall by gravity into a proper feed passage 17 and thereby be transferred ted to the nailing member. The nail selcting device has a limited movement by providing a pin 18 upon the upper edge of the bearing boss that projects into an elongated, concentric notch or recess 19 termed in the disk 14, the ends of said ndph'o r' rsss b ifig adapted to serve as' stops when abutting the pin 18;

' Thelower end of the spindle 13, below its baring 'has attached thereto an operating lug 6r arm 20, adapted to be engaged and ,actuatedb. suitable mechanism to be hereiiiafteii fiil y' assented, wh'ieby the siiiie" is givii' a rcisib'ensry movement, thus transmitting to, the disk 14 an oscillatorji iiitidm; the limit whereof is determined byft'li length of the" notch or recess 19 iii said disk.

isposed in aline ment with the lower end of the slotted gun? or raceway 1 0, is small notch '21 inth'e margin of the disk 14,. into which the innermost nail in the racwiy will be fed 'tihdfbe s ll ported a pendent positionby its. head, he shank of l dis oses adjacentone '-d e 'pg li. 5. the t h is or. ed 1 5 1. lig 6f he di k i'i fi y at he ads at sp es. whengdi op ati'ng liigior i '26 moved Ind tiie disk i l by the disk a sliort distance, -t'rrivhs WEI the. nailr hut 9r s g p ding to the driving meter, 7 s.

or ejector is i ie aa aptsg pa sy a nail oiitof are r recess 2 1 an.;..permi tli e s'a'me to lateness int-6th" aailvehiite This a e 'ntegral plate, g.ing disposedv fi t i nt c 11 E sss irs new. .4 e e 've. Tie ou r lat' la l been 10. 1 4; th switch is distaste in a shinny at s as s id blin and fe'eittens'ion or l lateral member stow? th dis; is Q hFLBmf t sea ers sa es gens.

former disposed adjacent the upper surface of the disk, and the latter extending parallel thereto and below the under surface of the disk. The upper edge of the lower arm 26 is beveled or inclined, as shown in detail in Fig. 4 of the drawings so as to insure the nail gravitating and not lmnging upon the edge thereof when knocked oil the disk.

In order to prevent the disk rotating in the event the feed pipe 22 has been removed, a lock-pin 27 is provided, the vertical portion of whichreciprocates in a guide channel 27 provided in the block and the upper end whereof is looped so that one shoulder formed by said loop may be dropped into the adjacent portion of the notch or recess 19 when the nail notch is opposite the raceway. The looped end is continued upon the opposite side of the block and is carried downwardly past a stud 28 to prevent the rotation of the lock-pin and is then bent laterally beneath said stud 28 to prevent the accidental displacement or withdrawal of the lock-pin. The upper part of the guidechannel 27 is slotted through to both sides of the block so as to receive the top of the loop when it is in its lowermost or looking position. The lower end of the lock-pin extends down through channel 27 and rests upon the upper surface of a suitable block 40 that is secured in position by a screw or otherwise. The engagement of the loop of the lock-pin with the slot in the disk is permitted to take place upon the removalof the block 40 and will prevent the disk being rotated sufliciently to deliver and eject the nail and as soon as the block 40 is replaced the lock-pin 28 will be elevated out of said notch or recess and permit the disk to again be rotated. The nail ejected from the disk 14 gravitates through the nail chute 22 and is received into a suitable chamber 30 of the nail throat or sleeve 31, said chamber bein continuous and of the throughout so" as to avoid the arresting of the nails therein and the consequent jammin of the chamber. Nail chute 22 is pre erably removable and comprises a tube, the lower end being cut obliquely as shown at 41 in the drawing, and is fitted into the outer portion of the sleeve 81, while its upper end extends up into the block so that when the latter is released from its his tenings and removed, said chute may be readily Withdrawn. The throat or sleeve 31 is bored axially to receive the driver rod 32 which reoi-procates therein and engages each nail and drives it into the shoe. This drivsame diameter ing rod 32 is of relatively small diameter der 84, and which is preferably biturcat ed longitudinally bycutting a suitable keif ;a ly ..e d .lssg tudigia ly .throu'gh the of said i To ee ea nei i r asuitabl mi g d wayg and an ejector provided with two arms adapt ed toextendvabove and belowsaiddisk and iagonally of the .path of saidnotch, and means .for locking said disk against .ro-

tation comprising a peripheral recess in said.

disk, and a longitudinally reciprocable memher to beintroduced into and withdrawn from a d rec v 6., In'shoenailing machines, a reciprocal driving arm the outer portion whereof "is provided witha ,vert-ical bore, a head mountin said bore and having a longitudinal;

slot formed therein, a driving rod vinserted in said slot and frictionally retained therein, a clamping bolt tapped transversely v through said arm and engaging said slotted head,

the arrangement'be'ing such that said head and said are'secured in position, and a nail-throat having an elongated central bore in which said driving rod :reciprocates and is guided thereby. i i

7. In a shoe nailing machine, a standard provided With a lateral overhanging extension, a guide rod the ends whereof are mountedin said extension and thebase of said standard respectively, a drivin arm,

carried by and recuprocal on said gui' e rod, a plate mounted on said extension adjacent the outer free end of said-drivin arm and provided with-a vertical groove in its face nearest said arm, and amember arranged to project from the .end ofsaid drivingarm and to enter and be guided in said groove so that lateral movement of said arm 1s pre'- vented. o I I 1 ,8. In a shoe nailing machine, a standard provided with a lateral overhanging extem,

sion, a guide rod carried by said extension, a driving mounted to reciprocate on said guide rod and the free outer end where- 'ofterminates adjacent the outer portion, of

said extension, and cooperating devices on said extension and driving arm so arranged that lateral movement of the latter is prevented,

9. In :2 provided. with a lateraloverhanging extension, a" guide rod carried by saidexjtension,

a driving arm: mounted to reciprocate on said guide r d, the free outer ends of Saidarm terminating'ad acent the outer portion fsaid extension, and cooperating devices on said "extension and thei sald end of' he driving armconsi'stlng of a vertically c1011 ated grooved plate and an elongated meme 81' en eg ng Said grqgved pl a ab era-1' mwement o the driv n amiss 1m:

i V v Q- In In iShee fl l eg-lnaehine, a nail rearena, a .n l h t e shoe nailing machine, a standard able therein, means stemming and ducting the separated: mails a-fromsaid mil receptacle .to' salidithroat and iimeluding a we movable inailwchutei adapted *to receive the separate nails fromwth'e ;.separati and discharge the sameinto saidnzii throat,

: means and devices adaptedito :lock saidi-nail sep'ass flting means aga-inst operation.

11. 'In a shoe nailing machine, a nail ceptacle, a feederadaptedgto receive inaile: 1 I

fromsmd -receptacle {and discharge the, same one at a time-to (the :driving membenfldevices adapted {to lock said feeder gagainst ,operation, and a removable nail chute interposed fit een saidafeeder and the driving member.

12. vIn a shoe nailing .machine, a mail ;re-

c ptacle, a mai ing :member, a rotatable nailfeeding device ,ooiiperating :with ,said recep-v,

tacle,-,a,cl1u te adapted-to freceitve nailsz-from aid n il feeding tdev1ice,,,and:;discharge the am to said nailing memher -und a ilolcmkv I anrying a na l device-and re-' movablymounted on said machine and which the iupper pottiQH of said fiht te i8 mounted, the lower portion of said gchute being removably in a channel-leading to the n iling chamber. V 7 Q i 18. In a shoe nailing machine, a nail :d i i g memb receptacle, a. rotatable,

118.11: feeding device cooperating-with said receptacle, a chute adapted ;to receive'nailfi separately fromsaid nail feeding device, a

nail throat in which th'efuaildritzihgme'm her eciproc'ates anu wind: is provided 1 1 na l chamber of the "same diameter hroughout its length and iscont nuvusfrom the lower end of "said .chute' to 'the nailingv member within said ,th'noat, means,

dapted to lock milv .;feedingidevice gainst operation; I

14. In a moo milipgifiaeifi ne, nail as; 1 mg member, .Ia Inuit meeptacle; "a. feeder adapted to receive mails fromsaid receptacle and discharge same onset 'a time toithe driving member, devices adept edto Lo'cklsaid; feeder'againet opepation','. a' removable milchute interposed; between said. feeder "andj drivingm mher; am 'a Emil throat :in.-wh1' h::-

said drivingmembenreciprocetes afidwhich is provided Wifll'fl ail amberoftheeamei diameter threuihout iw length iendwis 1 con-- #1 tinuo'u s. frorm t Sig ed a 12, Jos phtt nn y iBnoh n w,

a loweread :of: said: in aleto the drivin'gv -membei vyidlinigsaida'ithroatt;

eat-mites new e e-m we:

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